S.W. Ellingson, T.E. Clarke, A. Cohen, N.E. Kassim, Y. Pihlstrom, L. J Rickard, and G.B. Taylor, “The Long Wavelength Array“, Proc. IEEE, Vol. 97, No. 8, pp. 1421-1430, Aug 2009. Overview of the LWA concept (of which LWA1 is the first piece). Good for general background and intent, but was written while LWA1 was still in development, and is really more focussed on “LWA” without the “1” (the someday multi-station aperture synthesis imaging instrument).